Mattituck water temp
This data the coastal Mattituck ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Current ocean temperature in Mattituck
Water temperature in Mattituck today is 69.6°F. Based on our historical data over a period of ten years, the warmest water in this day in Mattituck was recorded in 2021 and was 73°F, and the coldest was recorded in 2013 at 66.9°F. Sea water temperature in Mattituck is expected to drop to 66.7°F in the next 10 days. September average water temperature in Mattituck is 70.9°F, the minimum temperature is 66.2°F, and the maximum is 78.3°F.
The swimming season in Mattituck lasts from July to September. During those months, Mattituck water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Mattituck in winter reaches 41.9°F, in spring 46.2°F, in summer the average temperature rises to 70.5°F, and in autumn it is 63.5°F.
Mattituck water temperature now
| September 25, 2025 |
|---|
| today temp |
| 69.6°F |
| September 24, 2025 |
|---|
| yesterday temp |
| 70°F |
The ocean salinity in Mattituck is 27.21‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Mattituck for today
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Mattituck. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Mattituck. Data in table shown for September 26, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
| 0' 6" | 0' 6" | 0' 6" | 1' 1" |
| 0.16 m | 0.15 m | 0.16 m | 0.32 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 1' 2" | 1' 4" | 1' 0" | 1' 2" |
| 0.35 m | 0.4 m | 0.3 m | 0.36 m |
Surf report in Mattituck
Mattituck weather forecast
Current temperature and weather
Data in a table show Mattituck temperature today (September 26, 2025). For more information and forecast for a few days, go to the weather forecast Mattituck.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  | | |
| 68°F | 68.2°F | 68.9°F | 70.9°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 | | | |
| 71.1°F | 70.9°F | 70.9°F | 70.3°F |
You may also be interested in other sections of our site for Mattituck: Sunrise and Sunset, Tides
Mattituck water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Mattituck. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Mattituck on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
| Month | Avr | Min | Max | |
|---|---|---|---|---|
| January | 40.8°F | 33.3°F | 48.9°F | cold |
| Ocean water temperature in Mattituck in January | ||||
| February | 37.6°F | 32.4°F | 43°F | cold |
| Ocean water temperature in Mattituck in February | ||||
| March | 39.6°F | 32.9°F | 49.6°F | cold |
| Ocean water temperature in Mattituck in March | ||||
| April | 45.1°F | 36.3°F | 53.1°F | cold |
| Ocean water temperature in Mattituck in April | ||||
| May | 53.8°F | 45.5°F | 64.9°F | cold |
| Ocean water temperature in Mattituck in May | ||||
| June | 64°F | 55.9°F | 75.4°F | cold |
| Ocean water temperature in Mattituck in June | ||||
| July | 73°F | 64.2°F | 80.8°F | warm |
| Ocean water temperature in Mattituck in July | ||||
| August | 74.3°F | 68.2°F | 81.3°F | warm |
| Ocean water temperature in Mattituck in August | ||||
| September | 70.9°F | 66.2°F | 78.3°F | warm |
| Ocean water temperature in Mattituck in September | ||||
| October | 64°F | 57°F | 71.4°F | cold |
| Ocean water temperature in Mattituck in October | ||||
| November | 55.6°F | 48.9°F | 63.1°F | cold |
| Ocean water temperature in Mattituck in November | ||||
| December | 47.3°F | 40.5°F | 53.1°F | cold |
| Ocean water temperature in Mattituck in December | ||||
Chart monthly average water temperature in Mattituck
